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(No Model.) 2 Sheets-Sheet 1.

- J. N. CONWAY.

PATTERN FOR GAR WHEELS. No. 363,598, PatentedMay 24, 1887.

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ATTORNEY.

(No Model.) 2 Sheets-Sheet 2.

J. N. CONWAY.

- PATTERN FOR GAR WHEELS. I

No. 363,598. Patented May 24, 1887.

Fig- 8- WITNESSES INVENTOR BY CAM ATTORNEY.

N. FETER5. FhoQo-Jlhugmphar. Washington, D t:v

. UNITED STATES PATENT OFFICE.

JOHN N. CQNW'AY, OFBALTIMORE, MARYLAND, ASSIGNOR OF TWO-THIRDS TO JESSECONVVAY AND GEORGE R. OTT, BOTH OF SAME PLACE.

PATTERN. FOR CAR-WH EELS.

SPECIFICATION forming part of Letters Patent No. 363,598, dated May24,1887.

Application filed February 18, 1887. Serial No. 228,048. (No model.)

To aZZ whom it may concern-.-

Be itknown that 1, JOHN N. CONWAY, a citizen of the United States,residing at Baltimore,

in the State of Maryland, haveinvented certain new and usefulImprovements in Patterns for Oar-Wheels, of which the following is aspecification.

My invention relates to improvements in patterns for car-wheels whichare cast in a chill, and is illustrated in the accompanying drawings, inwhich- Figure 1 is a sectional view of the drag and one of the two partscomposing my pattern, being that part which forms the side of the wheelhaving the flange, and which is cast in the drag portion of the flask,and showing it in the position it has while the drag is being filledwith sand and rammed. Fig. 2is an inverted plan of one-half of thepattern and the flask part shown in Fig. 1. Fig. 3 is a sectional viewof the cope and chill and one of the two parts of the pattern, beingthat part which forms the outer side of the wheel, and which is cast inthe cope portion of the flask. Fig. 4 is a top view of the cope andpattern shown in Fig. 3. Fig. 5. is a diametrical section of the copepart of the pattern, and Fig. 6 is a diametrical section of the dragpart of the pattern, both parts in these two figures being in properrelative position to represent the two surfaces of the car-wheel. Fig. 7shows a section of the flask, sand mold, and core complete, ready forthe metal to be poured. Fig.

' 8 shows a section of the car-wheel.

This invention consists in making the pattern of a wheel which is to becast in a chill in two parts, which together represent all the surfaceof the wheel that is molded in sand, and providing the cope part of thepattern with shoulders to supportthe chill-ring when molding.

The letter A designates one of the parts of the pattern being that partwhich includes the wheel-flange I), and embraces one side of the wheel.This part of the pattern forms the mold in the drag O of the flask.

pattern A is placed upon the floor face side up. The drag O is placedover it, as seen in Fig. 1, filled with sand, rammed, and then thepattern and drag are turned over and placed in the position the drag isdesigned to have when poured. The pattern A is then removed.

In molding, the

The letter D designates the other partof the pattern and embraces theouter side-of the wheel. This pattern has four brackets, I, each ofwhich has a vertical part, m, and a sloping shoulder, a. The saidvertical part representsthe tread-rim m of the car-wheel, and the saidshoulders receive the part a of the chill when molding and support thechill and cope. By employing the four brackets Z instead of a full rim,the pattern is much lighter. Over the part D of the pattern is placedthe chill-ring E and cope part of the-flask, F, both secured together.This part of the flask includes the sand edge which forms the outeredge, g, of the tread of the wheel, which edge it is desirable shall notbe chilled. The cope is filled with sand, rammed, and the pattern Dremoved, and then the cope and chill are placed in position on thedrag-mold, the cores h and Zr (see Fig. 7) having been inserted andsecured by clamps z. The moldis then ready forpouring, the metalentering at the pour-hole k. The flat sand face 0 at the rim of thedrag-mold receives the flat face 0 of the iron chill when the parts ofthe mold are put together ready for pouring.

It will be seen that my car-whecl pattern of two pieces forms all theouter surface of a carwheel and renders unnecessary the expensivepatterns that have heretofore been used, and which, when made in onepiece composed of wood and metal representing the entire wheel, aredifficult to handle in molding and soon be come so battered and indentedas to be incapable of producing a perfect mold. My pattern being in twoparts, and each part representing one surface of the wheel only, may bemade of metal and still be light and durable.

Every molder in a car'wheel fou'ndryhas an assistant or helper, whoseduty, among other things, is to fill sand in, ram, 820. WVhere thewheel-pattern is in one piece, it follows that either the molder-or hishelper are unavoidably idle much of the time, the onefbeing delayedwhile the other is doing his work. It

will be seen, therefore, that an important advantage resultlng from myimprovement in therefore, is very materially lessened. In first costthese patterns are cheap, and will wear much'longer than the usual woodpatterns.

Patterns of this kind,1nay be used for molding chilled Wheels known assingle plate,

double plate, arm, solid or hollow arm.

These patterns may be used with the flask in general use or with anyflask.

Having described my invention, I claim and which includes thewheel-flange, and the cope part D, representing the side of the wheelwhich includes 'the Outer edge of the wheeltread, and said cope partprovided with brackets 7, each of which has a sloping shoulder, a, tosupport the chill-ring when nolding, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN N. CON'WAY. Witnesses:

J OHN E. MoRRIs, JNO. T. MADDoX.

